2102201201982 has 16 divisors (see below), whose sum is σ = 4805031318912. Its totient is φ = 600628914840.

The previous prime is 2102201201953. The next prime is 2102201201983. The reversal of 2102201201982 is 2891021022012.

It is a super-2 number, since 2×2102201201982² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2102201201983) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25026204744 + ... + 25026204827.

It is an arithmetic number, because the mean of its divisors is an integer number (300314457432).

Almost surely, 2^{2102201201982} is an apocalyptic number.

2102201201982 is an abundant number, since it is smaller than the sum of its proper divisors (2702830116930).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2102201201982 is a wasteful number, since it uses less digits than its factorization.

2102201201982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50052409583.

The product of its (nonzero) digits is 2304, while the sum is 30.

Adding to 2102201201982 its reverse (2891021022012), we get a palindrome (4993222223994).

The spelling of 2102201201982 in words is "two trillion, one hundred two billion, two hundred one million, two hundred one thousand, nine hundred eighty-two".